Launcher, 37mm, Single Action, Striker Fired, Bottom Breech Loader Made in the USA! Caliber: 37/38mm (1.5”) Rimmed Ammunition. Will accept up to 6” shells Barrel Length: 9” (22.9cm). Fully enclosed rim. Transverse pin lockup Length 12.5in (39cm) Height 4.5in (11cm) Weight 3lb Safety: Ambidextrous Trigger Block Stock: None. Fixes to Picatinny Rail with included 4” Clamp. Can be converted to stand-alone configuration with optional stock adapter Materials: 6061-T6 Aluminum. 4140 Steel. All materials sourced from the USA Finishes: MIL-A-8625 Type II Anodizing and Mil-DTL-13924D Black Oxide